... – W1, W2, WAL1, WAL2 ,W-Ni-Fe, WMO50, WMO2 Tungsten plate mainly used for electronic semiconductor, Insulation panel of High Temperature ... Furnaces Heating Apparatus. With stable performance,the maximum withstand temperature of up to 3000 ... Specification – GB3875-83 ASTMB760-86 ASTMB777-87 ASTMB760 W1 tungsten plate and its alloy plate